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Battery pack having linear voltage profile, and SOC algorithm applying to the battery pack

  • US 9,263,908 B2
  • Filed: 03/14/2013
  • Issued: 02/16/2016
  • Est. Priority Date: 06/26/2012
  • Status: Expired due to Fees
First Claim
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1. A battery pack, comprising:

  • a rechargeable battery module; and

    a battery management system for controlling charging and/or discharging of the battery module, wherein;

    the battery module includes a substantially linear charging and discharging voltage-time profile within at least part of the charging and discharging cycle of the battery module, and the battery management system is configured to calculate a state of charge of the battery module by using linear charging and/or discharging characteristics of the battery module; and

    wherein the battery management system is arranged to calculate a second state of charge of the battery module after a time period of charging or discharging by determining a first state of charge of the battery module and then using the linear charging and/or discharging characteristics of the battery module.

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